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Finding the Fourth Proportional to 316,038.81, 436,133.51 and 172,798.82

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Solution

The fourth proportional to 316,038.81, 436,133.51 and 172,798.82 is: 238,462.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,038.81 : 436,133.51 = 172,798.82 : x
  2. Step 2: Convert to fraction form
    316,038.81/436,133.51 = 172,798.82/x
  3. Step 3: Cross multiply
    316,038.81x = 436,133.51 × 172,798.82
  4. Step 4: Simplify right side
    316,038.81x = 75,363,356,101.29
  5. Step 5: Solve for x
    x = 75,363,356,101.29/316,038.81
  6. Step 6: Final answer
    x = 238,462.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.